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Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.
A.while at the same time they have introduced some 100,000 dangerous chemical pollutants,
B.while at the same time introducing some 100,000 dangerous chemical pollutants that have
C.while they have introduced some 100,000 dangerous chemical pollutants at the same time, which have
D.but introducing some 100,000 dangerous chemical pollutants at the same time that have
E.but at the same time introducing some 100,000 dangerous chemical pollutant, having
我选的C选项 看解答说划线部分they和不划线部分they的指代不一样 是否一个句子中出现重复的代词只能指代一样东西？我觉得C选项更符合平行
还有之前看到的 比如 it指代一个东西 然后在逗号前出现it 逗号后出现这个东西 这样算无指代吗？？
不知道我说明白了吗 求解答 谢谢!! |
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发表于 2015-10-18 16:08:35
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